Osteology and systematics of Uberabatitan ribeiroi (Dinosauria; Sauropoda): a Late Cretaceous titanosaur from Minas Gerais, Brazil

Author(s)

Silva Junior, Julian C. G. ^{[1, 2]} ; Marinho, Thiago S. ^{[2, 3]} ; Martinelli, Agustin G. ^[4] ; Langer, Max C. ^[1]

Affiliation

^[1] Univ Sao Paulo, Lab Paleontol Ribeirao Preto, Fac Filosofia Ciencias & Letras Ribeirao Preto, Av Bandeirantes 3900, BR-14040901 Ribeirao Preto, SP - Brazil

^[2] Univ Fed Triangulo Hineiro, Ctr Pesquisas Paleontol Llewelyn Ivor Price, Estanislau Collenghi 194, BR-38039755 Uberaba, MG - Brazil

^[3] Univ Fed Triangulo Hineiro, Inst Ciencias Exatas Nat & Educ, Dept Ciencias Biol, Av Doutor Randolfo Borges Jr, BR-38064200 Uberaba, MG - Brazil

^[4] Museo Argentino Ciencias Nat Bernardino Rivadavia, CONICET, Secc Paleontol Vertebrados, Av Angel Gallardo 470, C1405DJR, Buenos Aires, DF - Argentina

• Document type: Journal article
• Source: Zootaxa; v. 4577, n. 3, p. 401-438, APR 8 2019.
• Web of Science Citations: 0

Abstract

Uberabatitan ribeiroi is a Late Cretaceous titanosaur (Dinosauria, Sauropoda) from southeastern Brazil. Here we provide a detailed revision of all its available specimens, including new elements from the type-locality. One new autopomorphy is added to diagnosis of the taxon: astragalus with a well-developed anteroposterior crest that mediodistally delimits the tibial articulation. Linear regressions were conducted in an attempt to circumscribe specimens within the type-series, revealing that it is composed of several individuals, with inferred total body lengths varying from 7 to 26 meters. Phylogenetic analyses including U. ribeiroi show that the Brazilian taxon corresponds to a non-saltasaurid lithostrotian titanosaur. (AU)

• FAPESP's process: 14/03825-3 - The origin and rise of dinosaurs in Gondwana (late Triassic - early Jurassic)
• Grantee: Max Cardoso Langer
• Support Opportunities: Research Projects - Thematic Grants